package com.zxc.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class GuliFeignConfig {

    @Bean
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor(){
            @Override
            public void apply(RequestTemplate requestTemplate) {
                //feign远程调用之前会调用是这个bean的apply方法
                ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                HttpServletRequest request = requestAttributes.getRequest();//老请求
                if (request != null){
                    //同步请求头数据：cookie
                    String cookie = request.getHeader("Cookie");
                    //新请求同步老请求的cookie
                    requestTemplate.header("Cookie",cookie);
                    System.out.println("feign远程调用之前会调用是这个bean的apply方法");
                }
            }
        };
    }
}
